@article { author = {López-Pérez, P.A. and Neria-González, M.I. and Flores-Cotera, L.B. and Aguilar-López, R.}, title = {A mathematical Model for Cadmium Removal using A sulfate Reducing Bacterium: Desulfovibrio alaskensis 6SR}, journal = {International Journal of Environmental Research}, volume = {7}, number = {2}, pages = {501-512}, year = {2013}, publisher = {University of Tehran/Springer}, issn = {1735-6865}, eissn = {2008-2304}, doi = {10.22059/ijer.2013.630}, abstract = {In this work, an unstructured-type mathematical model was developed to simulatecadmium (Cd2+) removal by Desulfovibrio alaskensis 6SR, which is a recently described sulfatereducing bacterium, whose capacity for removing heavy metals are being studied. Three processesare considered in the model: 1) the sulfate reduction process, 2) the consumption of lactate ascarbon source, and 3) the metal removal. The model was tested with different initial Cd2+ concentrations(50, 100, 170, and 190 mg/L), and it accurately predicted the behavior of experimental data withsatisfactory correlation coefficients (R2>0.97). In addition, the model showed that the H2S productionrate and initial concentration of Cd2+ are key operating variables in a bioreactor. Desulfovibrioalaskensis 6SR was able to remove more than 99.9% of cadmium in a batch process, where the initialconcentration was 170 mg/L. The model, applied to a continuous process, predicted a maximum Cd2+removal of 99.1% with the same initial concentration. Also, the model predicted the inhibitory effectof initial Cd2+ concentrations above 190 mg/L. The mathematical model developed can be used foroptimization and control purposes.}, keywords = {Desulfovibrio alaskensis,dynamic,Modeling,Cadmium removal,Kinetic,Anaerobic}, url = {https://ijer.ut.ac.ir/article_630.html}, eprint = {https://ijer.ut.ac.ir/article_630_0b7eb5ee3bc366f492eeda38968047a6.pdf} }